Wood-barking machine.



.1. J. HRUSKA4 WOOD BARKING MACHINE.

APPLICATION FILED MAR. |2,19|1,

Patented Oct. 16, 1917.

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JOSEPH J'. HBUSKA, Oli MENOMINEE, MICHIGAN.

WOOD-EARRING MACHINE.

Specification of Letters Patent.' 'Patented' Get. 16, 1917.

Application led March 12, 1917. Serial No. 154,161.

To all 'whom z't may concern:

Be it known that I, JOSEPH J. HRUSKA, a citizen of the United States,and resident of' Menomin'ee, in the county of Menominee and State ofMichigan, have invented certain new and useful Im rovements in Wood-Barking Machines; and I do hereby declare that the following is a full,clear, and exact description thereof.

My invention relates to new and useful improvements in wood barkingmachines, particularly that type having a rotary cutter positioned torevolve about the log which isbeing barked;

One of the principal objects of the invention is to provide a barkingmechanism which will entirely remove the bark from a log and leave thesame substantially the same diameter throughout its length and circularin c ross section.

Another object is toV provide an improved feeding mechanism for movingthe log to- Ward the cutter.

Still another object of this invention is to provide a comparatively'simply constructed .barking vmechanism which, while being very efhcientin operation, will, because of its relatively few number of parts berather inexpensive to manufacture.

With the foregoing and many other objects and advantages in view, theinvention resides more particularly in the novel combination, formationand arrangement of parts which will be hereinafter described andclaimed.

In the drawings Figure -1 represents a substantially verticallongitudinal sectional view on the line 1 1 of Fig. 2.

Fig. 2 is a vertical transverse section on the plane of the line 2 2 ofFig. 1.

In the preferred embodiment of my invention as shown in the accompanyingdrawing wherein similar reference characters designate like parts, itwill be noted that the major portion of the operating mechanism ismounted upon a suitable frame composed principally of a pair of spacedapart longitudinally extending angle metal side bars 1,

the other parts of the frame not being shown since they form no part ofthe present invention. The log L from which the bark B is to be removedis disposed longitudinally of the frame and is'supported above the sidebars 1 thereof by any preferred holdinge mechanism (not shown) saidmeans being used if considered necessary, to prevent the rotation of thelog.

An improved feeding mechanism is employed in connection with the otherparts of the invention and it may-also be used to support, or aid insupporting the lo This mechanism consists of a pair o spaced toothedrollers 2 positioned transversely of the side bars 1 and rotatably.mounted inthe free ends 'of pairs of arms 3. yOne of these rollers 2 isdisposed on each side of the bark removing mechanism which will behereinafter described, therefore one engages the portion of the log uponwhich the bark still remains and the other contacts with the cleanedpart. vThe arms 3 are pivotally mounted on a pai-r of shafts 4 lWhichare held in suitable bearings 5 secured to and depending from the sidebars 1, said shafts also having sprocket wheels 6 carried thereby. Fromone of the arms on each shaft 4 depends ,a short crank 7, these cranksbeing connected by a rod 8 so that movement of one pair of arms 3 willbe duplicated by the other pair.

The lever 9 fixed in any suitable manner to one pair of arms is adaptedto be used to force the rollers 2 into engagement with any sizelog'which is to be operated upon, the rollers being held in engagementwith said log by disposing a pawl carried bythe lever in any one of anumber of teeth formed on the segment 10. Each roller 2 has a sprocketor other form of gear mounted on one end around which are trainedsprocket chains 11 to connect these sprockets with the sprockets 6, anadditional sprocket chain 12 uniting the sprockets on the two shaft 4.Actuation of one of the sprockets or one of the shafts 4 is carried outin any suitable manner, the same being connected to any desired sourceof ower. 1n this man-ner both of the rollers w1ll be simultaneouslyrotated so that the log L will be moved longitudinally' of the'framewhenever said rollers.

have been engaged therewith as a result of the adjustment of the lever9.

The cutting blades 13 ofthe bark removing mechanism are diametricallyopposed and adjustably held in sockets 14 formed on one edge of aring-like member or annulus 15 which is adapted to surround the log Land. is of sufficient diameter to receive logs of any ordinary size. Themember 15 is preferably made large enough to surround any log which isliable to be encountered.,`

u A"15 and bearing balls 21, form means for I i' The edge of thememberopposite that upon which the sockets 14 are formed is' provided with agear ring 16, the teeth of which mesh With a spur gear 17 fixed on amain drive shaft 18. Thus when the gear 17 is rotated, the member 15will be revolved about the log, and the cutting blades 13 which havebeen adjusted with respect to the surface thereof will remove the bark.A

The member 15 is held for rotation with-l in an annularstationarysupport 19 having feet 20 projecting. from 'its opposite sidesand secured to the side bars 1, said support having a pair of ball raceswhich, together with similar racescarried by the member permitting easyrotation of the revolving parts. The support 19 also has a dependingbearing 22 in which one end of the shaft 18 is rotatably mounted. Thecutting vblades 13- consist of bars having their inner endsl sharpened,one edge of each having ratchet teeth 23' with which pivoted dogs 24engage,

springs 25 normally holding said dogs in engagement with the teeth. Itwill be seen from Fig. 1 that the formation of the ratchet teeth 23issuch that the cutting blades will be prevented from moving outwardlyso long as the dogs are in operative position, and that inward movementof the blades will be prevented by reason of a contracting 'coil spring26 whose opposite ends are connected respectively with pins 27 project-4o'4v drawing, but briefly described is as follows:

ing from the blades 13 and ears 28 carried by the sockets 14n. Thisconstruction permits the blades to be readily adjusted with respect toany size log after the same has lbeen centered Vin the annular member15.

The operation ofthis machine should be readily understood from theaccompanying After the log L has been positioned so that its center lineis substantially in the center shaft 18and of the annular member 15, thelever 9 isl moved in the proper direction to force the teeth of therollers 2 into contact with said log, said rollers being locked in thisAposi-v all of these adjustments have been made."

the operation of themachine is be n b starting the gu y mechanism whichvrotates the the rollers 2,it being necessaryto simultaneously feed thelog toward the rapidly rotating member 15 so that the blades thereofwill continuously remove the bark B. This Vmovement of the several partsof the device and the log lcontinues until all of the bark has beenremoved therefrom. In some instances it may be necessary to provide morethan one pair of diametrically opposed cutting blades, in which case,they would be disposed-at different points around the periphery of themember 15.

From this description it' will be obvious that a very simply constructedwood barking machine has been produced and one which very quickly andthoroughly removes the4 bark from any size log regardless of thethickness of the bark or the kind of tree which is being operated upon.Various minor changes may be made in the form and proportion of thevarious parts of the device without departing from or sacrificing any ofthe principles of the invention as set forth herein. l

What is claimed isz- 1. Adevice ofthe class described comprising anannular member to receive an elongated piece of work material, a socketcarried by the member, a blade in said socket, said blade having ratchetteeth in one edge, a pawl carried by the member for engagement with saidteeth to hold the blade against movementin any direction, a springconnected by its opposite ends with the blade and socket to hold theformer in the latter,

and means for rotating vthe member around the work material.

2. In a machine ofthe class described, a

frame including a pair of spaced side bars,

a stationary annular support having a pair of spaced feet secured to theside bars, a ring-like member rotatablyl mountedl in said annularsupport and extended beyondl the Y sides of the same, an annularexternal series of gear teeth on the member a/.jacent one end, a cuttingblade on the otherend of the member, a bearing depending yfrom theannular support between the side bars, an operating shaft journaled inthe bearing, and a pinion on the shaft and meshing with said series ofgear teeth. l j v 'In testimony that I claim thel foregoing `I havehereunto set my hand at Menominee,

in the county ofv Menominee and State of Michigan, in the presence oftwo witnesses.

Witnesses:

'JOHN WIzNnR, INA W. NYLAND.

